'Superhuman' Jason Day keeps vertigo at bay to grab four-way share of US Open lead

Jason Day wrote his name into US Open folklore on Saturday, grabbing a share of the third-round lead on a punishing Chambers Bay layout that had literally brought the Australian to his knees a day earlier.

Even though Day’s round will be long remembered, there is still another chapter to be written in the 115th US Open with Americans Jordan Spieth and Dustin Johnson and South African Brendan Grace all level on four-under 206 going into Sunday.

Day had sent a fright through the galleries on Friday when he suddenly collapsed on his final hole, suffering from vertigo, and had to be helped from the course by medics but only after he had grimly completed his round and collapsed again.

Day’s caddie, Colin Swatton, said he had reservations about his charge playing, then called it “a superhuman effort” and the “greatest round of golf I’ve ever watched”.

“I said to him ‘They might make a movie about that round.’ It was pretty impressive. It was up there with Tiger Woods playing with a broken leg and winning the US Open.”

Sitting just three shots off the lead overnight and in contention for a first major, there was worry the world number 10 would have to withdraw but Day dug deep into his reserves and on Saturday was back on the first tee.